Kadiatoe



Y H. A. PRELL.

RADIATOR.

APPLICATION FILED MAR. 24. 1919.

1,380,342. Patented Feb. 10,1920.

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gunmen. APPLICATION F|!.ED MAR. 24. la9l9.

"Patented Feb. '10, 1920.

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HARRY A. PRELL, 0F HARTFGRD, WI$GONSIN.

RADIATOR.

Specification of Letters Patent.

Patented Feb. 10, 1920.

Application filed March 214, 1919. Serial I'l'o. 284,596.

, To all whom it may concern:

Be it known that I, I'IARRY A. PRELL, a citizen of the United States,residing at Hartford, inthe county of Washington and State of Wisconsin,have invented certain new'and useful Improvements in Radiators, of whichthe following is a specification.

This invention is a radiator for automobiles, and more especially one ofthat type having vertical water tubes; and the object of thesame is toprevent freezing as far as possible.

Another object is to provide means whereby a greaternumber of tubes maybe opened to the flow of water as the heat of the radiator increases.

Another object is to employ a thermally controlled valve for; changingthe course of the water. j

Other objects will appear in the follow-- ing specification and claims,and attention is drawnto the drawings wherein Figure 1 is a centralvertical section through this improved radiator.

Fig.2 is a transverse vertical section at right angles to thesectio'nalline of Fig, 1.

Fig. 3 is an enlarged sectional detail of the filling tube and l r Fig.4 is a sectional detail on the line H Of 3; V

Nofnovelty is claimed for the shell Sof this radiator, itsfilling nippleN and cap C, nor its inlet and outlet I and O. The inlet as'usual leadsfrom the top of the on gine, the outlet leads preferably through asuitable pump into the engine jacket, and water is suppliedfrom time totime through the nipple N as well understood.

- Coming now to the details of the present invention, partitions 1 and 2extend across the interior of the shell at about the points shown, thefront and shorter water tubes 3 connect and open through thesepartitions preferably near the front side of the radiator where they aresubjected to considerable breeze; and other tubes 4:; 5, 6 and 7 growingrespectively longer toward the rear as shown, open also through thelower partition and extendup and completely through the upper partitionas shown. The lower ends j of all tubes are by preference restricted asshown at 8 so as to retard the passage of water through them. The upperends of the tubes 4:, 5, (Sand 7 open through a grade late 9, which isinclined from the rear wall of the shell S downward towardwits frontfrom the ends of the radiator inward toward its center or toward thespace 12 as seen in Fig. 1. Above these plates is a chamber 14 yet to bereferred to. Beneath the lowerpartition 2 is another chamber 15communicating with the outlet through a valve 16 capable of being set byhand. A pet cook 17 also opens from a high point in the chamber 15, fora purpose to appear. Finally a large tube or conduitlS connects andopens through both partitions, directly beneath and in alinement withthe nipple N and there is an opening through the grade plate 9 directlyabove this conduit, while of course the space between the baffle plates10 is above this opening.

. In Fig. 3 is seen a filling tube. a cylindrical body 20 preferablyflanged at 21 at its upper end so that it may be dropped into the nippleN, and its exterior circumference is suflicient to permit it to bepassed lnto the bore of the conduit 18 at its upper end as seen inFig. 1. The body 20 is provided with upper and lower series of openings22 and 23, the former adapted when the tube is 1n placeto stand ustbeneath the nippleand the openings 23 adapted at this time to stand justabove the partition 1 and within the space 12 between the two baffleplates 10. A. damper or valve of the butter. fly type 2%. is pivotedwithin this tube near its lower end, and a rod25 leads upward therefromand connects with a thermalela meat 26 located within the tube near its.up-

This has per end, the connections being. such that when this elementexpands the. valve is closed, and the reverse. 1 The action of thisimproved radiator will be as follows? Having been coupledup, its valve16 is closed and wateris poured into the radiator to fill the chamber.15 completely full and to stand. well within the lower ends of thetubes and the conduits and then the pet cock 17 isopened and the waternow be as much water within the chamber 15 as could be accommodatedabove the present water level, throughout all the tubes to the overflowindicated at 30. Now when the pet cock is closed and the valve 16opened, the-water flows into the jackets of the engine, through thepumpreferred to above. As it is drawn around through the pump and driventhrough the jackets, it flows in at the inlet pipe I under the battle13, above the partition 1 and beneath the grade plate 9. Flowinginto'the openings 23, it passes down through the lower end of thefilling tube 18, and again passes through the chamber 15 and onward.Very soon this water becomes warm, and its efiect upon the thermalelement 26 is to close partly and eventually to close fully the valve ordamper 2%. Now the water flowing in at the inlet must rise within thetube 18 and will flow out the upper openings 22, when it runs over the.plates 10 through this space 12 and down the restricted front pipes 3into the chamber 15 and again throughout its course. lVith the enginerunning the capacity of the restricted pipes 3 is not supposed to conveythe full volume of water, so that it rises above the partition 1 andflows first through the pipes 4, then through the pipes 5 and so on.Thus more and more pipes are brought into play as the water becomeshottera'nd the circulation more rapid, and of course the more pipesthere are brought into use the larger the radiating surface and thegreater its effect upon the water flowing therethrough. When th'e'enginecomes to rest and the thermal element 26 again becomes'cool, the damper2-1 will open automatically and the water above the partition 1, ifthere be any, flows rapidly down the conduit 18 into the chamber 15,because the capacity of the conduit 18 is ample and the flow of watertherethrous h is not restricted.

A striking feature of this invention lies in-the fact that when theradiator is working with warm or hot water more and more of the tubes orpipesare in use: but when the water becomes cool and finally cold, thedamper 24 opens and all the water collects within the chamber 15, sothat the pipes and tubes are drained. It is far safer to permit water tostand and to cool off within a chamher in bulk, than it would be toallow it to stand Within radiator pipes exposed to cold weather andpurposely made extremely sensitive thereto, and therefore my inventionprovidingautomatic means for draining the pipes has its advantage" whenthe car is idle. In summer time the entire filling tube can be lifted;out of place, as its useduring that season is not essential.

The foregoing description and the drawings have reference to what may beconsidered the preferred or approved form of my invention. It is to beunderstood that I may make such changes in construction and arrangementand combination of parts, materials, dimensions, et cctera, as may proveexpedient and fall within the scope of the appended claims.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is 1. In a radiator of the type described,the combination with a shell, spaced partitions across the same, f rwardpassages connecting and opening through the partitions and affordingrestricted communication between the chambers above and below saidpartitions, and an inlet into the upper and an out let out of the lowerchamber; of a series of other passages opening through the lowerpartition and extending through the upper partition, their upper endsrising to various heights, a relatively large conduit opening throughboth partitions, and means for automatically retarding the flow of waterthrough said conduit when the water becomes heated.

2. In a radiator of the type described, the combination with a shell,spaced partitions across the same, certain tubes connecting and openingthrough the partitions and afiording restricted communication betweenthe chambers above and below said partitions, and an inlet into theupper and an outlet out of the lower chamber; of a series of other tubesopening through the lower partition and extending through the upperpartition, their upper ends rising to various heights, a relativelylarge conduit opening through both partitions, a damper within saidconduit, and a thermal element con nected with said damper and adaptedto close the same as the water increases in heat.

3. In a radiator of the type described, the combination with a shell,spaced partitions across the same, forward tubes connecting and openingthrough the partitions and affording restricted communication betweenthe chambers above and below said partitions, and an inlet into theupper chamber and an outlet out of the lower chamber; of

a series of other tubes opening through the lower partition andextending through the upper partition, their upper ends rising tovarious heights, a relatively large conduit opening through bothpartitions, a damper within the conduit, a filling tube in the upper endof the conduit and having a series of openings above the upper partitionand a second series of openings at its upper end, a grade plateconnecting the upper ends of said tubes of various lengths and incliningtoward said short tubes, and a thermal element within said filling tubeconnected with the damper and adapted to close the latter as thewaterincreases in heat.

4. In a radiator for motor vehicles, the combination with a shell havinginlet and outlet openings at its upper and lower ends,

a partition across the shell beneath the inlet,

a partition across the shell above the outlet, anda large conduitopening through said partitions; of a series of relatively small pipesconnecting and opening through the partitions, the front pipes beingshortest and the others increasing in length toward the rear of theshell, a grade plate connecting their upper ends, baflie plates abovethe grade plates and spaced from each other, a filling tube removablyinserted in said conduit through the space between said bafiies andhaving openings between the grade plate and the upper partition, and athermally controlled valve within the filling tube beneath its openings,for the purpose set forth.

5. In a radiator for motor-vehicles, the combination with a shell havinginlet and outlet openings at its upper and lower ends, a partitionacross the shell beneath the inlet,

v a partition across the shell above the outlet,

and a large conduit opening through said partitions; of a series ofrelatively small pipes connecting and opening through the partitions,the front pipes being shortest and the others increasing in lengthtoward the rear of the shell, a grade plate connecting their upper ends,baffie plates above the grade plates and spaced from each other, afilling tube removably inserted in said conduit through the spacebetween said baflies and having openings between the grade plate and theupper partition and another series of openings at its upper end abovethe battle plates, a valve within said tube beneath the lower opening, athermal element within the tube beneath the upperlopening, and a rodconnecting the element and valve and adapted to close the latter whenthe water increases in heat.

In testimony whereof I affix my signature in presence of two witnesses.

HARRY A. PRELL.

Witnesses F. M. Ln COUNT, JULIUS C. WAALA.

